在水泥砂浆中掺入石灰浆的主要目的是（）

在水泥砂浆中掺入石灰浆的主要目的是（    ）。

Every deliberate act of wrongdoing by the master or any of the crew against the ship or cargo，without the authorization or privity of the Shipowner or his agent，is（）.

（）, or drum is used for hauling in or letting out the wires or ropes which will fasten the ship to the shore.

A salvor may be（）the whole or part of the payment due under Salvage Convention to the extent that the salvage operations have become necessary or more difficult because of fault or neglect on his part or if the salvor has been guilty of fraud or other dishonest conduct.

The （） is used for hauling in or letting out the wires or ropes.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

橡胶经过（）工艺可制成各种橡胶制品。

逻辑运算符（AND、NOT、OR）的运算顺序是AND→OR→NOT。

压力容器的用途代号B表示贮存器。

成品酸塔的主要用途是贮存产品酸。